[RCaffin]

OK, about right. That insert has a very short wiper near the tip, but the actual length of the cutting edge is shorter than for an end mill.

All the same, I still say you have to make the trade-off for your machine: push it too hard (to get the short cycle time) and you may get chatter. Me, I would be more concerned about the chatter than the cycle time.
And a chattering machine is going to wear out a lot faster too.

Cheers
Roger

[MBViklund]

OK, about right. That insert has a very short wiper near the tip, but the actual length of the cutting edge is shorter than for an end mill.

All the same, I still say you have to make the trade-off for your machine: push it too hard (to get the short cycle time) and you may get chatter. Me, I would be more concerned about the chatter than the cycle time.
And a chattering machine is going to wear out a lot faster too.

Cheers
Roger

I agree with you. But my problem with the regular endmills i have tried. I won't get anywhere near the material removal as with the indexable. I have tried low DOC and wide WOC, up to 10mm DOC with low WOC, but it seems to chatter no matter what I do. I always run HSM toolpaths. In fact it wants to chatter even for the finish pass. I can't leave more than 0.1 mm 7mm DOC finish or else I get chatter. Anyone having recomendations for steelcutting endmills that works good with the Torus?

[AUSTINMACHINING]

I agree with you. But my problem with the regular endmills i have tried. I won't get anywhere near the material removal as with the indexable. I have tried low DOC and wide WOC, up to 10mm DOC with low WOC, but it seems to chatter no matter what I do. I always run HSM toolpaths. In fact it wants to chatter even for the finish pass. I can't leave more than 0.1 mm 7mm DOC finish or else I get chatter. Anyone having recomendations for steelcutting endmills that works good with the Torus?

I would try is using the shortest end mill possible for your required depth of cut, installed directly in an R8 shank to get as much rigidity as possible at the tool. That indexable looks to have a lot of stick out. I usually leave 3% of the tool diameter for a finish pass which has always worked well for me. From what I can find, that looks to be steel used for molds ?. I cant find it in the list for HSMadvisor. Your chips look to have a blue tint, so it looks like your SFM is correct.

[MBViklund]

I would try is using the shortest end mill possible for your required depth of cut, installed directly in an R8 shank to get as much rigidity as possible at the tool. That indexable looks to have a lot of stick out. I usually leave 3% of the tool diameter for a finish pass which has always worked well for me. From what I can find, that looks to be steel used for molds ?. I cant find it in the list for HSMadvisor. Your chips look to have a blue tint, so it looks like your SFM is correct.

Thats probably a good idea. I will order some r8 collets to try mounting the tooling directly in the spindle. Actually the tool stick out is less than what I need. I need 35mm since that is the material thickness, It is 32mm.


The material is a common construction steel around 150-190 HB.

Equal to:
S355J2G3 / S355J2G3+N
EN 10025-2 : 2004
ASTM E290-97a
NACE MR-0175 / ISO 15156
AISI A 350 LF2

[AUSTINMACHINING]

Thats probably a good idea. I will order some r8 collets to try mounting the tooling directly in the spindle. Actually the tool stick out is less than what I need. I need 35mm since that is the material thickness, It is 32mm.


The material is a common construction steel around 150-190 HB.

Equal to:
S355J2G3 / S355J2G3+N
EN 10025-2 : 2004
ASTM E290-97a
NACE MR-0175 / ISO 15156
AISI A 350 LF2

Here's some numbers from HSM advisor for a 156HB material. This is probably pushing the ragged edge of Horse power. With 5 flute and fancy coatings, the feed rate goes up over 100 IPM. I would use these SFM numbers, start slow on the feed and work my way up. Carbide comes apart when things start to vibrate. I've read Cobalt tools are tough and don't chip as easily as carbide when things get tough, but I've never tried any.

Attachment 297896